The association between dietary fiber and digestive function has been known for many centuries. The Ancient Greeks reportedly understood that fibrous grains could help alleviate constipation.
Nearly 1 in 5 U.S. adults experience this health issue ... spokesperson for the Academy of Nutrition and Dietetics. Foods rich in fiber are particularly good at preventing constipation.
The Dietary Guidelines for Americans recommends adults eat 14 grams of fiber per 1,000 calories. It says more than 90% of women and 97% of men don't. Leeming, who used to work as a private chef ...